CVE-2026-105742 Docling: Configured HTTP headers sent to every remote image host named by a document
Attackers can steal configured HTTP headers, such as API keys, by crafting documents with remote image URLs when remote fetching is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-105742?
CVE-2026-105742 is a low-severity vulnerability in docling-project docling, published on 5 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.95.0 until 2.132.0, the HTML image resource loader in docling/backend/utils/image_resource_loader.py forwards headers configured through the HTMLBackendOptions.headers setting to every remote image URL named by an untrusted document when enable_remote_fetch=True and fetch_images=True. The loader does not restrict those credentials to the source document's origin, allowing requests that carry custom headers such as API keys and cookies to follow cross-origin redirects and expose the caller's configured credentials to a document author. The default configuration is not affected because remote fetching and configured headers are required. This issue is fixed in 2.132.0.
Which versions are affected by CVE-2026-105742?
6 open source packages ship an affected version, including docling and docling-slim. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
docling PyPI | From 2.95.0 | 2.132.0 |
docling PyPI | From 2.95.0 | 2.132.0 |
docling PyPI | From 2.95.0 | 2.132.0 |
docling-slim PyPI | From 2.95.0 | 2.132.0 |
docling-slim PyPI | From 2.95.0 | 2.132.0 |
docling-slim PyPI | From 2.95.0 | 2.132.0 |
Products include Docling Docling.
How do I fix CVE-2026-105742?
Upgrade docling to 2.132.0 or later.
Is CVE-2026-105742 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105742 exists.
Other vulnerabilities in docling-project docling
- CVE-2026-44016 Docling: Unsafe Playwright-based HTML Rendering
- CVE-2026-105744 Docling has arbitrary file read/write (and command execution when shell-escape is enabled) when rendering untrusted TikZ with the opt-in Tectonic engine
- CVE-2026-44017 Docling: Unsafe Zip Extraction in EasyOCR Model Download
- CVE-2026-44020 Docling: Unsafe XML Entity Expansion in USPTO Patent Backend
- CVE-2026-47214 Docling: Unsafe URI and Path Handling in HTML Backend
Sources
Also known as GHSA-p3fw-7699-7926, PYSEC-2026-4189, PYSEC-2026-4212.